Carrier frequency bias estimation with OFDMA up link system intersection
Title：
Carrier frequency bias estimation with OFDMA up link system intersection
Application Number：
 200610011553
Application Date：
 2006/03/24
Announcement Date：
 2006/08/16
Pub. Date：
Publication Number：
 1819574
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H04L 27/26, H04L 5/02
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Fan Da, Cao Zhigang, Fan Pingyi
Key Words：
 Carrier frequency bias estimation, OFDMA up link system, intersection
Abstract：
 The invention modifies the signal structure of receiver to make the received signal taking the numbers of sub-carrier in each sub-channel as its periodic time in order to rearrange the signal by the receiver. After calculating covariance matrix, Jacobi eigenvalue and eigenvector, Akaike Information Criterion (AIC) is used to estimate the numbers of subscribers. After frequency deviation spectrum is figured out, through rough estimation and precision estimation, the estimated value of subscriber frequency deviation is obtained.
Claim：
Priority：
PCT：
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